Electromagnetic shielding effectiveness performance of carbon fiber reinforced polymer (CFRP) composites with hematite and goethite in far-field

Abstract

Carbon fibers (CFs) are indispensable materials in our daily life. The excellent bearing capacity, remarkable dielectric property, ease of production, and corrosion resistance of CFRP composites distinguish them from all other options in addition to them, CFRPs may also shield from electromagnetic interference (EMI). In this study, two-layer CF reinforced epoxy composites reinforced with two different hematite (alpha- Fe2O3) and goethite (FeO(OH)) particle sizes of 50 nm and 45 μm (325 mesh) were produced using the manual lay-up method. Then, far field electromagnetic shielding effectiveness (SE) with 700 MHz - 6000 MHz range were examined. The maximum shielding effectiveness was determined to be at 5200 MHz with 39.28 dB for 5 wt.% FeO(OH), at 4700 MHz with 38.38 dB for 10 wt.% Fe2O3(325 mesh), at 3800 MHz with 37.15 dB for 15 wt.% Fe2O3(50 nm).

Keywords

• Carbon fibers
• Far field
• Electromagnetic shielding
• carbon fiber reinforced polymer
• Hematite
• Goethite

Hematit ve götit takviyeli karbon fiber polimer kompozitlerin uzak alan elektromanyatik kalkanlama etkinliği performansı

Öz

Karbon fiber (carbon fiber: CF) katkılı malzemeler, günlük hayatımızda vazgeçilemez malzemelerdir. CF takviyeli kompozitlerinin (CFRP) üstün mukavemeti, yüksek dielektrik özelliği, üretim kolaylığı ve korozyon direnci, CFRP’leri diğer malzemelerden öne çıkaran özelliklerinden yalnızca birkaçıdır. Bu çalışmada partikül boyutları 50 nm ve 45 μm (325 mesh) olan iki farklı hematit (alfa-Fe2O3) ile götit (FeO(OH)) takviyeli, 2 katmanlı CF takviyeli epoksi kompozitler el ile yatırma yöntemi kullanılarak üretilmiştir. Üretilen kompozitler 700 MHz-6000 MHz aralığında uzak alan elektromanyetik kalkanlama özelliklerini tespit etmek için testlere tabi tutulmuşlardır. Maksimum kalkanlama etkisi, ağırlıkça %5 FeO(OH) takviyeli kompozit için 39.28 dB ile 5200 MHz'de, %10 Fe2O3(325 mesh) takviyeli için 38.38 dB ile 4700 MHz’de, %15 Fe2O3(50 nm) takviyeli için 37.15 dB ile 3800 MHz’de belirlenmiştir.

Anahtar Kelimeler

• Karbon fiber
• Uzak alan
• Elektromanyetik kalkanlama
• Karbon fiber takviyeli polimer kompozit
• Hematit
• Götit

Kaynakça

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